The study investigated the assessment of test taking skills of undergraduates on their academic performance in Ignatius Ajuru University of Education, Port Harcourt. The study adopted quasi-experiential research method. The population of the study was 5446 year 2 students in the 2019/2020 academic session in the University. The sample of the study was 269 students drawn from various faculties in the university through multi-stage sampling method. The instruments for data collection were a computer-based performance test titled: “Use of English Test (UET)”. Other instruments used in the study are: Interest Inventory (II), Attitude Scale (AS) and Test Anxiety Scale (TAS). The computer based Use of English Test was given to experts in the department of English and Communication Studies while all the instruments were given to experts in Measurement and Evaluation. The reliability of the computer-based Use of English Test was determined through Kuder-Richardson21 while the reliability of the other instruments was determined through ordinal alpha. The instruments yielded the following coefficients: .82 for the Computer-Based Use of English Test, .81 for Interest Inventory, .75 for Attitude Scale and .83 for Test Anxiety Scale. Analysis of covariance was used in testing the hypotheses at .05 level of significance. The result of the study showed that test taking skills boost students’ academic performance in the computer-based use of English test, enhanced their interest, make them have positive attitude towards the Use of English Test and decreased the test anxiety. Based on the results the researcher recommended that test taking skills be taught as s general course amongst others.